The carjacking victim, who said he doesn't want to be identified, said that he thought he would die before he took advantage of a brief opportunity to escape.

Police said the man was carjacked shortly after Massachusetts Institute of Technology police Officer Sean Collier was killed. The man said he was in his car on the side of a road about 11 p.m. when a man holding a gun approached his passenger-side window.

"The man asked if I knew about the Boston bomb explosion," the victim said. "He said, "I did that.'"

According to court documents released Monday, "The man with a gun forced the victim to drive to a second location, where they picked up a second man. The two men put something in the trunk of the victim's vehicle."

The contents are thought to be the ammunition and explosives used in a battle with police later that night.

The carjacking victim said was forced into the front passenger seat as one brother drove.

"They asked me where I'm from. I told them I'm Chinese," the man said. "I was very scared. I asked them if they were going to hurt me. They said they won't hurt me. I was thinking, 'I think they will kill me later.'"

But if that was their plan, they wouldn't get the chance. The carjacking victim said his car was running out of gas, so the men needed to fill up.

They drove to a Shell station on Memorial Drive. When one brother went inside to pay for the gas while the other pumped, the victim took off.

"I thought it was a very good chance for me to run," he said. "So, I made a judgment. I used my left hand to unbuckle my belt, my right hand to open the door. I jumped out of the car and ran away across the street."

He said he ran as fast as he could.

"The guy outside the car tried to catch me using his hand," the victim said. "He tried to catch me, but I ran very fast."

The man said he could hear the brother swearing at him as he ran.

"I was worried," the man said. "It was very scary at that moment. For me, I'm so lucky."

The carjacking victim said that although the experience was terrifying, it doesn't change his view of Boston, which he called his adopted home.

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